<!DOCTYPE html>
<html lang="zh-CN">
    <head>
        <meta charset="UTF-8" />
        <title>19_盒子模型-外边距-分写写法</title>
        <style>
            div {
                width: 200px;
                height: 200px;
                background-color: aqua;

                /* 控制盒子和盒子之间的距离 */
                margin-top: 10px;
                margin-right: 20px;
                margin-bottom: 30px;
                margin-left: 40px;
            }
        </style>
    </head>
    <body>
        <div></div>
    </body>
</html>